Small Craft Advisory 960, NWS Seattle, WA

680 
WHUS76 KSEW 132113
MWWSEW

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
213 PM PDT FRI APR 13 2012

.A SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS IS IN EFFECT FOR THE
COASTAL WATERS. A SMALL CRAFT ADVISORY FOR ROUGH BAR CONDITIONS
IS IN EFFECT FOR THE GRAYS HARBOR BAR.

PZZ153-156-140515-
/O.CON.KSEW.SW.Y.0033.000000T0000Z-120414T1200Z/
/O.EXB.KSEW.SC.Y.0960.120413T2200Z-120414T0600Z/
COASTAL WATERS FROM JAMES ISLAND TO POINT GRENVILLE OUT 10 NM-
COASTAL WATERS FROM POINT GRENVILLE TO CAPE SHOALWATER OUT 10 NM-
213 PM PDT FRI APR 13 2012

...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS REMAINS IN EFFECT
UNTIL 5 AM PDT SATURDAY...
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM PDT THIS EVENING...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT UNTIL 11 PM PDT THIS EVENING. 

* WIND AND WAVES...NORTHWEST WIND 15 TO 25 KNOTS WITH 2 TO 4 FOOT
  WIND WAVES THIS EVENING...EASING AFTER MIDNIGHT.

* SWELLS...WESTERLY 11 FEET OVER THE COASTAL WATERS TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

A SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS MEANS THAT WAVES WILL
BE HAZARDOUS TO SMALL CRAFT. MARINERS SHOULD AVOID SHOALING
AREAS. LONG PERIOD SWELL CAN SHARPEN INTO LARGE BREAKING WAVES IN
SHOALING AREAS. IT IS NOT UNUSUAL FOR WAVES TO BREAK MUCH FARTHER
FROM SHOALING AREAS THAN IS NORMALLY EXPERIENCED. REMEMBER...
BREAKING WAVES CAN EASILY CAPSIZE EVEN LARGER VESSELS.

&&

$$

PZZ110-140515-
/O.EXT.KSEW.RB.Y.0015.000000T0000Z-120414T2100Z/
GRAYS HARBOR BAR-
213 PM PDT FRI APR 13 2012

...SMALL CRAFT ADVISORY FOR ROUGH BAR NOW IN EFFECT UNTIL 2 PM
PDT SATURDAY...

* BAR CONDITION...ROUGH WITH BREAKERS POSSIBLE DURING THE 
  MAXIMUM EBB CURRENTS. 

* COMBINED SEAS...10 TO 12 FEET.

* FIRST EBB...1145 PM THIS EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY FOR ROUGH BAR MEANS THAT WAVE CONDITIONS
WILL BE HAZARDOUS TO SMALL CRAFT IN OR NEAR HARBOR ENTRANCES.

&&

$$

PZZ131-132-140515-
/O.EXT.KSEW.SC.Y.0960.120413T2200Z-120414T1200Z/
CENTRAL U.S. WATERS STRAIT OF JUAN DE FUCA-
EAST ENTRANCE U.S. WATERS STRAIT OF JUAN DE FUCA-
213 PM PDT FRI APR 13 2012

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 AM PDT SATURDAY...

* WIND AND WAVES...WEST WIND 15 TO 25 KNOTS THIS EVENING WITH 2 
  TO 4 FOOT WIND WAVES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ150-170-173-176-140515-
/O.CON.KSEW.SW.Y.0033.000000T0000Z-120414T1200Z/
COASTAL WATERS FROM CAPE FLATTERY TO JAMES ISLAND OUT 10 NM-
WATERS FROM CAPE FLATTERY TO JAMES ISLAND 10 TO 60 NM-
WATERS FROM JAMES ISLAND TO POINT GRENVILLE 10 TO 60 NM-
WATERS FROM POINT GRENVILLE TO CAPE SHOALWATER 10 TO 60 NM-
213 PM PDT FRI APR 13 2012

...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS REMAINS IN EFFECT
UNTIL 5 AM PDT SATURDAY...

* SWELLS...WESTERLY 10 TO 11 FEET OVER THE COASTAL WATERS TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS MEANS THAT WAVES WILL
BE HAZARDOUS TO SMALL CRAFT. MARINERS SHOULD AVOID SHOALING
AREAS. LONG PERIOD SWELL CAN SHARPEN INTO LARGE BREAKING WAVES IN
SHOALING AREAS. IT IS NOT UNUSUAL FOR WAVES TO BREAK MUCH FARTHER
FROM SHOALING AREAS THAN IS NORMALLY EXPERIENCED. REMEMBER...
BREAKING WAVES CAN EASILY CAPSIZE EVEN LARGER VESSELS.

&&

$$


WWW.WEATHER.GOV/SEATTLE

658 
WHUS76 KSEW 140338
MWWSEW

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
838 PM PDT FRI APR 13 2012

PZZ153-156-141145-
/O.CON.KSEW.SC.Y.0960.000000T0000Z-120414T0600Z/
/O.CON.KSEW.SW.Y.0033.000000T0000Z-120414T1200Z/
COASTAL WATERS FROM JAMES ISLAND TO POINT GRENVILLE OUT 10 NM-
COASTAL WATERS FROM POINT GRENVILLE TO CAPE SHOALWATER OUT 10 NM-
838 PM PDT FRI APR 13 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS
EVENING...
...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS REMAINS IN EFFECT
UNTIL 5 AM PDT SATURDAY...

* WIND...NORTHWEST 15 TO 25 KNOTS.

* SWELLS...WESTERLY 10 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

A SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS MEANS THAT WAVES WILL
BE HAZARDOUS TO SMALL CRAFT. MARINERS SHOULD AVOID SHOALING
AREAS. LONG PERIOD SWELL CAN SHARPEN INTO LARGE BREAKING WAVES IN
SHOALING AREAS. IT IS NOT UNUSUAL FOR WAVES TO BREAK MUCH FARTHER
FROM SHOALING AREAS THAN IS NORMALLY EXPERIENCED. REMEMBER...
BREAKING WAVES CAN EASILY CAPSIZE EVEN LARGER VESSELS.

&&

$$

PZZ110-141145-
/O.CON.KSEW.RB.Y.0015.000000T0000Z-120414T2100Z/
GRAYS HARBOR BAR-
838 PM PDT FRI APR 13 2012

...SMALL CRAFT ADVISORY FOR ROUGH BAR REMAINS IN EFFECT UNTIL
2 PM PDT SATURDAY...

* BAR CONDITION...ROUGH WITH BREAKERS POSSIBLE DURING THE 
  MAXIMUM EBB CURRENTS. 

* COMBINED SEAS...10 TO 12 FEET.

* FIRST EBB...1145 PM THIS EVENING.

* SECOND EBB...NOON SATURDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY FOR ROUGH BAR MEANS THAT WAVE CONDITIONS
WILL BE HAZARDOUS TO SMALL CRAFT IN OR NEAR HARBOR ENTRANCES.

&&

$$

PZZ131-132-141145-
/O.CON.KSEW.SC.Y.0960.000000T0000Z-120414T1200Z/
CENTRAL U.S. WATERS STRAIT OF JUAN DE FUCA-
EAST ENTRANCE U.S. WATERS STRAIT OF JUAN DE FUCA-
838 PM PDT FRI APR 13 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 AM PDT
SATURDAY...

* WIND...WEST 15 TO 25 KNOTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ150-170-173-176-141145-
/O.CON.KSEW.SW.Y.0033.000000T0000Z-120414T1200Z/
COASTAL WATERS FROM CAPE FLATTERY TO JAMES ISLAND OUT 10 NM-
WATERS FROM CAPE FLATTERY TO JAMES ISLAND 10 TO 60 NM-
WATERS FROM JAMES ISLAND TO POINT GRENVILLE 10 TO 60 NM-
WATERS FROM POINT GRENVILLE TO CAPE SHOALWATER 10 TO 60 NM-
838 PM PDT FRI APR 13 2012

...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS REMAINS IN EFFECT
UNTIL 5 AM PDT SATURDAY...

* SWELLS...WESTERLY 10 OR 11 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS MEANS THAT WAVES WILL
BE HAZARDOUS TO SMALL CRAFT. MARINERS SHOULD AVOID SHOALING
AREAS. LONG PERIOD SWELL CAN SHARPEN INTO LARGE BREAKING WAVES IN
SHOALING AREAS. IT IS NOT UNUSUAL FOR WAVES TO BREAK MUCH FARTHER
FROM SHOALING AREAS THAN IS NORMALLY EXPERIENCED. REMEMBER...
BREAKING WAVES CAN EASILY CAPSIZE EVEN LARGER VESSELS.

&&

$$


WWW.WEATHER.GOV/SEATTLE

643 
WHUS76 KSEW 140934
MWWSEW

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
234 AM PDT SAT APR 14 2012

PZZ131-132-141745-
/O.CAN.KSEW.SC.Y.0960.000000T0000Z-120414T1200Z/
/O.NEW.KSEW.SC.Y.0961.120415T0100Z-120415T1200Z/
CENTRAL U.S. WATERS STRAIT OF JUAN DE FUCA-
EAST ENTRANCE U.S. WATERS STRAIT OF JUAN DE FUCA-
234 AM PDT SAT APR 14 2012

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 5 AM
PDT SUNDAY...
...SMALL CRAFT ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 5 AM PDT
SUNDAY. THE SMALL CRAFT ADVISORY HAS BEEN CANCELLED. 

* WIND...WEST 15 TO 30 KNOTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ150-153-156-170-173-176-141045-
/O.CAN.KSEW.SW.Y.0033.000000T0000Z-120414T1200Z/
COASTAL WATERS FROM CAPE FLATTERY TO JAMES ISLAND OUT 10 NM-
COASTAL WATERS FROM JAMES ISLAND TO POINT GRENVILLE OUT 10 NM-
COASTAL WATERS FROM POINT GRENVILLE TO CAPE SHOALWATER OUT 10 NM-
WATERS FROM CAPE FLATTERY TO JAMES ISLAND 10 TO 60 NM-
WATERS FROM JAMES ISLAND TO POINT GRENVILLE 10 TO 60 NM-
WATERS FROM POINT GRENVILLE TO CAPE SHOALWATER 10 TO 60 NM-
234 AM PDT SAT APR 14 2012

...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS CANCELLED THE SMALL
CRAFT ADVISORY FOR HAZARDOUS SEAS. 

$$

PZZ134-141745-
/O.NEW.KSEW.SC.Y.0961.120415T0100Z-120415T1200Z/
ADMIRALTY INLET-
234 AM PDT SAT APR 14 2012

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 5 AM
PDT SUNDAY...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 5 AM PDT
SUNDAY. 

* WIND...NORTHWEST 15 TO 25 KNOTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ110-141745-
/O.CON.KSEW.RB.Y.0015.000000T0000Z-120414T2100Z/
GRAYS HARBOR BAR-
234 AM PDT SAT APR 14 2012

...SMALL CRAFT ADVISORY FOR ROUGH BAR REMAINS IN EFFECT UNTIL
2 PM PDT THIS AFTERNOON...

* BAR CONDITION...ROUGH WITH BREAKERS POSSIBLE DURING THE MAXIMUM
  EBB CURRENT TODAY.

* COMBINED SEAS...10 FEET DURING THE EBB TODAY.

* FIRST EBB...NOON TODAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY FOR ROUGH BAR MEANS THAT WAVE CONDITIONS
WILL BE HAZARDOUS TO SMALL CRAFT IN OR NEAR HARBOR ENTRANCES.

&&

$$


WWW.WEATHER.GOV/SEATTLE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SEATTLE WA
210 AM PDT FRI APR 13 2012

.SYNOPSIS...DRIER WEATHER IS LIKELY TODAY INTO THE WEEKEND AS AN
UPPER TROUGH MOVES INLAND ACROSS CALIFORNIA...AND A WEAK UPPER RIDGE
APPROACHES FROM THE WEST. HOWEVER...THERE MAY BE A FEW RESIDUAL
SHOWERS OVER THE CASCADES TODAY INTO SATURDAY. A FRONTAL SYSTEM WILL
MOVE INTO THE REGION EARLY NEXT WEEK.

&&

.SHORT TERM...THE AIR MASS CONTINUES TO STABILIZE EARLY THIS MORNING
ACROSS WESTERN WASHINGTON WITH CLEAR TO PARTLY CLOUDY SKIES AND
AREAS OF FOG OVER THE SOUTH SOUND AND SOUTHWEST INTERIOR. THE UPPER
LEVEL TROUGH THAT BROUGHT THE SOUTHERLY FLOW AND INSTABILITY TO THE
REGION YESTERDAY IS STARTING TO MOVE ONSHORE OVER NORTHERN
CALIFORNIA. THE FLOW ALOFT OVER THE AREA WILL BECOME LIGHT AND
VARIABLE TODAY WITH LESS INSTABILITY APART FROM A WEAKLY NEGATIVE
LIFTED INDEX AND SMALL AMOUNTS OF CAPE OVER THE CASCADES THIS
AFTERNOON. GIVEN THAT THE MODELS REMAIN VIRTUALLY UNANIMOUS IN
KEEPING MOST OF OUR FORECAST AREA DRY TODAY...I REMOVED THE MENTION
OF SHOWERS FROM ALL AREAS EXCEPT THE CASCADES THIS AFTERNOON. A
MOSTLY SUNNY FORECAST LOOKS GOOD WITH HIGH TEMPERATURES IN THE MID
50S TO LOWER 60S.

THE UPPER LOW OVER CALIFORNIA WILL CONTINUE EASTWARD TONIGHT
AND SATURDAY...AND AN UPPER RIDGE OFFSHORE WILL MOVE INSIDE OF 130W.
THE FLOW ALOFT OVER WESTERN WASHINGTON WILL BECOME NORTHWESTERLY
ALONG WITH A MODEST INCREASE IN LOW LEVEL ONSHORE FLOW. THE MODELS
BRING AN INCREASE IN LOW LEVEL MOISTURE ON SATURDAY THAT RESULTS IN
A MARINE LAYER PUSHING INLAND. GIVEN THE DEPTH OF THE LAYER SHOWN IN
MODEL CROSS SECTIONS AND NUMERICAL GUIDANCE SUGGESTING OVERCAST
SKIES IN THE MORNING...I BOOSTED MORNING CLOUD COVER BUT RETAINED
THE IDEA OF PARTLY SUNNY CONDITIONS IN THE AFTERNOON AND HIGH
TEMPERATURES NEAR OR A LITTLE ABOVE NORMAL.

A WEAK UPPER LEVEL RIDGE AXIS WILL MOVE ONSHORE ON SUNDAY. AS HAS
BEEN DISCUSSED PREVIOUSLY...IT WILL BE A DIRTY RIDGE AND I EXPECT
PLENTY OF HIGH AND MID LEVEL MOISTURE WILL BE FILTERING THROUGH.
SUNDAY STILL LOOKS DRY AND PARTLY SUNNY...THOUGH PROBABLY BECOMING
MOSTLY CLOUDY FOR COASTAL AND NORTHERN AREAS BY AFTERNOON. WITH THE
GFS/ECMWF IN DECENT AGREEMENT...TIMING WITH THE PRECIPITATION AHEAD
OF THE NEXT SYSTEM HAS BEEN NUDGED FORWARD A FEW HOURS...WITH RAIN
DEVELOPING ALONG THE COAST LATE SUNDAY NIGHT AND A CHANCE OVER THE
INTERIOR.

.LONG TERM...RAIN SHOULD BE ON THE COAST AHEAD OF THE NEXT SYSTEM BY
THE PREDAWN HOURS MONDAY...SPREADING INTO THE INTERIOR AROUND
DAYBREAK. LITTLE WAS CHANGED WITH MONDAYS FORECAST...EXCEPT TO BOOST
POPS OVER THE CASCADES TO BETTER MATCH SURROUNDING FORECAST OFFICES.
THE LATEST ITERATIONS OF THE GFS/ECMWF SUGGEST ANOTHER BREAK IN THE
ACTION FOR TUESDAY...WITH LOW AMPLITUDE TRANSITORY RIDGING. THE
PATTERN REMAINS UNSETTLED THEREAFTER WITH ANOTHER SYSTEM ARRIVING
AROUND MIDWEEK IN ZONAL FLOW. THE MODELS MORE OR LESS MAINTAIN A
ZONAL FLOW PATTERN THROUGH THE WHOLE OF NEXT WEEK...WITH WEAK
SYSTEMS COMING ONSHORE EVERY OTHER DAY OR SO. 27

&&

.AVIATION...WEAK HIGH PRES OVER WESTERN WASHINGTON. SCATTERED CLOUDS
TODAY PLUS A FEW AREAS OF MORNING LOW CLOUDS AND FOG AROUND
DAYBREAK...MNLY SW INTERIOR...OLM-SHN...CHEHALIS GAP AROUND
DAYBREAK. WILL PROBABLY SEE A FEW TOWERING CU BUILD UP THIS
AFTERNOON. THE WINDS ALOFT ARE LIGHT SLY BECMG NW AND INCREASING A
BIT TONIGHT AND SAT. 19

KSEA...SCATTERED CLOUDS AND A LIGHT N BREEZE TODAY. AREAS OF MORNING
FOG SHOULD BE CONFINED TO RIVER VALLEYS AND ARND OLYMPIA AND NOT
DEVELOP ARND SEATTLE.

&&

.MARINE...SMALL CRAFT ADVISORY COASTAL WATERS FOR SEAS. LIGHT PRES
GRADIENTS WILL TURN A BIT STRONGER AS PRESSURES RISE OFFSHORE WHILE
FALLING INLAND TODAY...THAT SHOULD BE ENOUGH TO GIVE W 15-25 KT
WINDS THIS EVENING IN THE STRAIT. SATURDAY SHOULD BE A REPEAT BEFORE
A WEAKENING FRONT WILL APPROACHES THE COAST SUNDAY TURNING THE FLOW
TO SLY. 19

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...NONE.
PZ...SMALL CRAFT ADVISORY COASTAL WATERS FOR HAZARDOUS SEAS AND FOR
THE GRAYS HARBOR BAR FOR ROUGH BAR CONDITIONS.

&&

WWW.WEATHER.GOV/SEATTLE

FOR THE GRAPHICAL AFD VISIT...
WWW.WEATHER.GOV/SEATTLE/GAFD/LATEST_WEBAFD.HTML